Callr vs Vonage SMS API
| Callr | Vonage SMS API | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | Yes |
| Paid from | €599/mo | — |
| Open source | No | No |
| Platforms | Web | Android, api, iOS, Web |
| Free plan | No | No |
| Pay-as-you-go | — | Yes |
| SMS API | — | Yes |
| Delivery status | — | Yes |
| Webhooks | — | Yes |
| Two-way messaging | — | Yes |
Both are listed in Best Transactional SMS Software. On Everything Xiaomi, Vonage SMS API scores higher on our published basis.